"create" command: fix support for bloomfitler options

From "hbase shell", it used to be possible to create column families with bloomfilters, but that is currently not working, probably since the API moved to a BloomType from a simple boolean:

public void setBloomFilterType(StoreFile.BloomType bt)

http://hbase.apache.org/docs/r0.89.20100924/apidocs/org/apache/hadoop/hbase/regionserver/StoreFile.BloomType.html

Need:

• Add support for BLOOMFILTER=>"row", and "rowcol"
• Fix support for BLOOMFILTER=>"true", and "false" (and maybe "none")
• Update the shell docs, and shell help
  . Add or update shell regression/unittests so it doesn't break in the future